
<h1><span class="yiyi-st" id="yiyi-12">numpy.asfarray</span></h1>
        <blockquote>
        <p>原文：<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.asfarray.html">https://docs.scipy.org/doc/numpy/reference/generated/numpy.asfarray.html</a></p>
        <p>译者：<a href="https://github.com/wizardforcel">飞龙</a> <a href="http://usyiyi.cn/">UsyiyiCN</a></p>
        <p>校对：（虚位以待）</p>
        </blockquote>
    
<dl class="function">
<dt id="numpy.asfarray"><span class="yiyi-st" id="yiyi-13"> <code class="descclassname">numpy.</code><code class="descname">asfarray</code><span class="sig-paren">(</span><em>a</em>, <em>dtype=&lt;type &apos;numpy.float64&apos;&gt;</em><span class="sig-paren">)</span><a class="reference external" href="http://github.com/numpy/numpy/blob/v1.11.3/numpy/lib/type_check.py#L75-L105"><span class="viewcode-link">[source]</span></a></span></dt>
<dd><p><span class="yiyi-st" id="yiyi-14">返回一个转换为float类型的数组。</span></p>
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<tr class="field-odd field"><th class="field-name"><span class="yiyi-st" id="yiyi-15">参数：</span></th><td class="field-body"><p class="first"><span class="yiyi-st" id="yiyi-16"><strong>a</strong>：array_like</span></p>
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<div><p><span class="yiyi-st" id="yiyi-17">输入数组。</span></p>
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<p><span class="yiyi-st" id="yiyi-18"><strong>dtype</strong>：str或dtype对象，可选</span></p>
<blockquote>
<div><p><span class="yiyi-st" id="yiyi-19">浮点类型代码强制输入数组<em class="xref py py-obj">a</em>。</span><span class="yiyi-st" id="yiyi-20">如果<a class="reference internal" href="numpy.dtype.html#numpy.dtype" title="numpy.dtype"><code class="xref py py-obj docutils literal"><span class="pre">dtype</span></code></a>是其中一个&apos;int&apos;类型，它将替换为float64。</span></p>
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<tr class="field-even field"><th class="field-name"><span class="yiyi-st" id="yiyi-21">返回：</span></th><td class="field-body"><p class="first"><span class="yiyi-st" id="yiyi-22"><strong>out</strong>：ndarray</span></p>
<blockquote class="last">
<div><p><span class="yiyi-st" id="yiyi-23">输入<em class="xref py py-obj">a</em>作为浮点数。</span></p>
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<p class="rubric"><span class="yiyi-st" id="yiyi-24">例子</span></p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">np</span><span class="o">.</span><span class="n">asfarray</span><span class="p">([</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">])</span>
<span class="go">array([ 2.,  3.])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">np</span><span class="o">.</span><span class="n">asfarray</span><span class="p">([</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">],</span> <span class="n">dtype</span><span class="o">=</span><span class="s1">&apos;float&apos;</span><span class="p">)</span>
<span class="go">array([ 2.,  3.])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">np</span><span class="o">.</span><span class="n">asfarray</span><span class="p">([</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">],</span> <span class="n">dtype</span><span class="o">=</span><span class="s1">&apos;int8&apos;</span><span class="p">)</span>
<span class="go">array([ 2.,  3.])</span>
</pre></div>
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</dd></dl>
